Electromagnetic transmitter

Active Publication Date: 2014-11-06
CONTROL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an electromagnetic transmitter that can be produced in a compact form, installed in pipelines, and operated at low frequencies. The transmitter is designed to withstand high fluid pressures and is highly durable and resistant to damage. It can be programmed to operate at different frequencies for tracking and locating multiple devices simultaneously. The transmitter has an access opening for inserting batteries and can be sealed and enclosed in a reliable and efficient manner. The technical effects of this invention include improved efficiency, durability, reliability, and versatility for use in various pipeline applications.

Problems solved by technology

Unfortunately, the prior art transmitter disclosed in U.S. Pat. No. 6,088,580 is deficient in various significant respects.
The electromagnetic coil and the electronic components are therefore susceptible not only to destructive damage caused by physical collisions and impacts, but also to corrosion and interference caused by exposure to pipeline fluids which can reach the coil and electronic components (a) through breaks, cracks, or chips which occur in the plastic coating and / or (b) by infusion beneath the plastic coating due to high pressure conditions existing in the pipeline.
Moreover, the ferromagnetic core tube of the prior art transmitter is also susceptible to corrosion and chemical attack.
Although possessing ferromagnetic properties, low carbon steel is highly susceptible to corrosion when exposed to water and other fluids.
Consequently, the core tube of the prior art transmitter is also subject to damage and corrosion caused by exposure to water and / or other fluids or chemicals present in the pipeline which breach the plastic coating through breaks, cracks, or chips, or by pressure infusion.
In addition, even if the plastic coating remains intact, the capped end of the ferromagnetic core tube, which must be openable for installing and replacing the batteries, is not coated with the plastic material and therefore is constantly exposed to whatever fluids and chemicals happen to be in the line, no matter how corrosive.

Method used

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  • Electromagnetic transmitter
  • Electromagnetic transmitter

Examples

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Embodiment Construction

[0013]An embodiment 1 of the transmitter provided by the present invention is illustrated in the drawing. The inventive transmitter 1 comprises an outer pressure resistant housing 2 and a transmitter assembly 4 which is preferably entirely contained within the pressure housing 2.

[0014]The internal transmitter assembly 4 comprises: a ferromagnetic tube 12; an electromagnetic coil 20 wrapped around the exterior of the ferromagnetic tube 12 so that the ferromagnetic tube 12 and the windings 20 form an electromagnetic transmission antenna; one or more batteries 8, 10 which are removably received within the ferromagnetic tube 12 for powering the transmitter assembly 4; an insulating tube / sleeve 6 positioned within the ferromagnetic tube 12 between the batteries 8, 10 and the interior surface of the ferromagnetic tube 12 to prevent the batteries from contacting the ferromagnetic tube 12; an end piece 14 which is secured on a projecting distal end 16 of the insulating tube 6 such that the ...

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Abstract

A pressure resistant, impact resistant, and corrosion resistant electromagnetic transmitter for pipeline uses and other applications. During use, the ferromagnetic core, the electromagnetic windings, and the other electromagnetic transmission components of the transmitter are entirely contained and sealed within a rugged outer housing.

Description

FIELD OF THE INVENTION[0001]The present invention relates to electromagnetic transmitters for use in tracking and locating pipeline pigging devices and for use in other applications.BACKGROUND OF THE INVENTION[0002]A need exist for an improved electromagnetic transmitting device which can be used, for example, for tracking and locating pigging devices employed in pipeline systems. The improved electromagnetic transmitting device will preferably be (a) compact enough to be installed within or towed behind pigging devices used even in small diameter lines, (b) pressure sealed and pressure resistant, (c) impact resistant, (d) corrosion resistant for use in water lines, petroleum and petroleum product lines, gas lines, etc., (e) resistant to cleaning agents and other chemicals used in such lines, and (0 economical to build and use.[0003]An example of a prior art electromagnetic transmitter is provided in U.S. Pat. No. 6,088,580. The prior art transmitter disclosed in U.S. Pat. No. 6,088...

Claims

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Application Information

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IPC IPC(8): H04B1/034
CPCH04B1/034F16L55/48
InventorFARQUE, JASONFARQUE, ERIC
OwnerCONTROL DEVICES